Most chickens farmed for meat in the UK have been genetically selected to grow very quickly.
This is a problem because fast weight gain can cause health problems such as lameness and heart defects.
Another welfare concern is that most chickens aren't given enough space to exercise freely.
Not having enough room can mean the birds are less able to be active and rest undisturbed.
Also, the majority of chickens have little opportunity to perform a wide range of natural behaviours.
Objects like straw bales to peck at and natural light help keep them active and healthy.
What makes RSPCA Assured different?
The RSPCA welfare standards must be met for chicken to be labelled RSPCA Assured.